A man who can write a tune, yes; someone with an interesting tale, definitely; but it's not like many rock stars need to choose between playing the guitar or being a rocket scientist.

But by the time you become a 45-year-old father-of-three most people would have learned a bit about life. Figured out, perhaps, the obvious things like crime is bad, brains are sensitive, and mistakes are best learned from rather than repeated.

"Everything in moderation, lads," he said of his youngest two children. "Just remember, you will never be as cool as your dad."

Well, that's not too bad, is it? We'll overlook the fact he was talking about two boys aged five and two and it's easy to be relaxed about their possible future drug use when it seems so far away, and we'll just have to wonder if he is equally relaxed about his 12-year-old daughter who is infinitely more likely to be given the opportunity sometime soon.

No, the word to concentrate on in that asinine sentence is 'cool'. Drugs are cool. Dad took drugs. Dad is cool.

Noel Gallagher is cool because he was the driving creative force behind a massively successful band and he doesn't go to work in a boring office or drive a Ford Fiesta. He travels the world and plays songs and is fabulously rich, and that's what makes him cool. The fact he blew £1million on drugs over 18 years and survived makes him an extremely lucky idiot, and if he had more than two brain cells to rub together he'd tell his children luck is not genetic but stupidity is.

He has also said previously that "doing drugs is the most beautiful thing about being in a rock band" and "drugs is like getting up and having a cup of tea in the morning". He even said, not long ago: "As soon as people realise that the majority of people in this country take drugs, then the better off we'll all be. It's not like a scandalous sensation, or anything like that."

In fact the United Nations Office on Drugs and Crime says 2.2 per cent of Britons use cocaine, and worldwide a mere 5 per cent of people take illicit drugs. Just because it's normal for rock stars does not mean it's normal for everyone else.

But Noel's spent a lot of time talking about drugs while publicising his music, and perhaps it's hard for rock stars to know what life is like when you're not one.

Too chatty?: Noel Gallagher's revelations came on Alan Carr show

Well I'll tell you, Noel. The biggest lie ever told about drug use is that it's just a bit of fun which affects only you. It doesn't.

Around every user, whether it's occasional or frequent, are loved ones, friends, colleagues and relatives who have to take those drugs with you whether they like it or not. Only they don't get the high. They get the downs, the worry, the waiting.

I was once in a relationship with someone who, unbeknown to me, began using cocaine for a bit of a laugh on nights out. His choice, his bit of fun, so what?

When he came home at all hours I lost sleep. When I found bags of coke that had fallen out of his pockets I worried. In bed I would listen to his heart race, terrified it might stop in his sleep.

His money disappeared. There were arguments over the grocery shopping and he refused to pay his half. He accused me of stealing from him.

Two days after a bender he would scratch at his arms and legs in his sleep, sometimes to the point of bleeding. Three days after a bender he would be furiously angry about the tiniest things, he would provoke rows which got worse and worse, and one time out of total frustration and fear I slapped his face.

Chained to the mirror and the razor blade: One of Gallagher's early songs hinted at drug use (Image: Getty)

His response was to pick me up and throw me across the room into the stereo unit - about ten feet. I curled up in a ball, he shoved his face into mine and screamed at me, then stormed out. It seemed horrible, bizarre, but he told me it was my fault because I had slapped him. Horrified at both of us, I apologised.

The next time there was a row he threw me into a wall. Then he picked me off the floor and shook me until I went limp. Another time he dragged me out of bed by an ankle and locked me in the hallway for the night.

He kicked down locked doors and he made me beg on my knees, in tears and desperation, for his forgiveness for making him do it. If I refused, his moods got worse.

Not everyone who takes drugs acts like that because everyone's brain chemistry is different. For some people it really can be just a bit of fun, with no serious effects, whereas for others it becomes a crippling addiction.

Aside from my ex, this job has meant I have dealt with every kind of drug user, from smackheads and crackheads to stoners and pill-poppers. I've sat through inquests and court cases and parades of petty thieves stealing to feed a habit, and had relatives crying on my shoulder about the mental illness drugs brought out in a loved one.

What someone like Noel Gallagher, who is listened to and admired by many people, ought to say is that there are many uncool things about drugs. One is that you don't know how you will react to them until after you have taken them, by which point it is too late. Another is that people will think it makes them a better person when in fact they are just an expensive way of acting like more of a twat.

Proud dad: Noel with wife Sara and son Sonny (Image: PA)He could point out that one of the most pernicious things about drugs is that they are most attractive to the people who should best avoid them. To those who are vulnerable, prone to other problems, and to teenagers who want to rebel but whose brains are still growing and will be more seriously affected by a drug than an adult's.

And he could, perhaps, point out that while he lots of money and didn't mind losing a million pounds, he lost it to a global criminal network which rapes, murders, terrorises and controls millions of people the whole world over. There is a long and painful chain of unpleasantness from intimidated peasant farmers, drugs mules and couriers, all the way to a girl who lives in fear because her partner's idea of fun is to take a chemical which makes him a shouty idiot for 15 minutes and a beast to live with for a week afterwards.

Alcohol is bad too of course, and perhaps the way to remove some of the problems with drugs is to legalise them. Nothing can change the fact they make stupid and selfish people more stupid and selfish still.

But then your average dad who states on national television he'd let his children take drugs could expect a visit from social services and at least a bit of outrage or a strongly-worded slap on the wrist from Ofcom.

Noel Gallagher isn't going to get any of those things, because he isn't your average dad. He's a lot, lot stupider than that.